Brake shoe



Nov. 1, 1927.

J. W. PETERSON BRAKE SHOE Filed March 9, 1927 INVENTOR Jmm PETERSON ATORNEY Patented Nov. 1, 1927.

nirso sr-A'rs 1,641,661 PATENT OFFICE;

JOHN W. PETERSON, OF SOUTH BEND, INDIANA, A SSIGNOR TO BENDIX BRAKE COM-PANL; OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

BRAKE snon.

' Application filed March 9, 1927. Serial No. 173,805.

- This invention relates to brake shoes, and

is illustrated as embodied in a secondary shoe for a three-shoe internalexpanding automobile brake.

Various features of novelty relate to reinforcing an arm ofchannel-section projecting at the end of the shoe, by means of aseparate plate or stamping secured in the channel of the arm;to'arranging a tongue entering an opening in the outer band of the shoe,to take the shearing strains, by bending up radially of the shoe asection cut from an attaching flange underlying the band; to a novehbushing arranged to receive the pivot "or anchor of the shoe; and toother novel wardly in Figure 1;

Figure 3 is a section through the bushing on the line 3-3 of Figure 2;

Figure 4': is a section through the pivot arms at the end of the shoe,on the line 4.--4 of Figure .2;

Figure 5 is a section through the shoe proper, before the lining isattached, on the line 55 of Figure 2;

Figure 6 is an elevation of the pivot end of the shoe, looking in thedirection of the arrows 6-6 of Figure 2;

Figure 7 is a section through the left end of the shoe, on the line 7-7of Figure 2;

Figure 8 is a section through the shoe near the left end, on the line8-8 of Figure 2;

Figure 9 is a partial elevation, looking in the direction of the arrows9 9 of Figure 2; and

Figure 10 is a partial section on the line 10-10 of Figure 5, but on alarger scale.

The illustrated shoe is the secondary shoe of a three-shoe brake of thegeneral type of that described in Patent No. 1,628,388, granted BendixBrake Company on May 10, 1927, on application of John R. Cautley.

It includes generally an outer arcuate band or rim 10, to which thebrake lining 12 is riveted, and which is provided with two separatestifi'ening webs 14, and 16, each of which is enerally channel-shaped incrosssection, thus providing short lateral re1nforcing flanges at theinner edges of the websas well as outer attaching flan es underlying andspotswelded to the band 10.

According to one feature of the invention, the outer flanges of webs 14and 16 are cut away at intervals to form notches 18. These notchesfacilitate the drawing of the stamplngs; moreover, part of the materialprovided by forming two or three of these notches is bent radiallyoutward to form tongues 20 (Figureh) passing through slots in band 10and taking the shearing strains tending to separate band 10 from webs14: and 16 lengthwise of the shoe. As best appears in i IparallelFigures 2 and 10, tongues 20 have sides and the two tongues are paral lwith each other, so that there is no interference in inserting thetongues into the slots in band 10.

The left end of the shoe is arranged to be connected by a floating pivotto the primary shoe of the brake, each of'the webs 14 and 16 beingprovided with a bushing 24: for the pivot. At this end of the shoe,also, aplate or stamping 26, formed with a tongue 28 for the attachmentof a return spring, is spotwelded to the inner flanges of the webs 14and 16.

At the right-end of the shoe, webs 14 and 16 are extended beyond the endof,band 10 (i. e. beyond the friction face of the shoe) as projectingpivot arms. These arms are preferably strengthened by separate plates orstampings 30 set down into thechannels of the webs (see Figure 4) andspot-welded.

(Figure 2) or 8:2'(---W6lded (Figure, 4) in place.

At the extreme end of the shoe, a bushing 32 is provided for the anchorof the shoe, the bushing being headed atone end and having a flange spunover at the other end, to secure it permanently in place. A spacer 34may be sleeved on bushing 32 between the webs 14 and 16. Washers 36 areshown (Figure 8) inserted next to Webs 14 and 16 under the head and thespun-over flange at the opposite ends of bushing 32.,

While one illustrative embodiment has been described in detail, it isnot myi'intem tion to limit thescope ofthe invention to thatparticularembodiment, or otherwise than by the terms of the appendedclaims.

I claim:

1. A brake shoe having, in combination,

an outer arcuate bandTa stiffening member" integrally extended at oneend of the band as a projecting arm, and a reinforcing plate secured inthe channel of the stifiening member and reinforcing said arm. a

2. A brake shoe having, in combination, an outer arcuate band, astiflfening member for the band channel-shaped in section and integrallyextended at oneend oi the band as a projecting arm, and a reinforcingplate secured in the channel of the stiii'eninginelnher and extendingfrom a-point short of the end of said band substantially to the end ofsaid arm.

3. A brake shoe comprising an arcuate band formed with at least oneopening, and

a stiilening member having a flange under lying the band, said flangebeing out inward- 1y from its edges toj-define a tongue bent outwardradially of the shoe and extending through said opening.

l. A brake shoe'comprising an. arcuate band fonned with at least oneopening, and

lsection and having its outer flange underly-- ing the bend, said outerflange being out inwardly from its edges to define a tongue bent ouiwardradially of the shoe and ex tending through said opening.

5. A brake shoe haying spaced arms at one end formed with .alinedopenings, a bushing passing through said openings, and e spacer sleevedon the bushing and engaging the inner faces of said arms and rigidlyspacing them. apart.

S. A brake shoe having, at least adjacent. its free end, a spaced pairof stiffening Webs, in combination with a separate plate secured to andbridging across said Webs and formed with an integral tongue for. theattachment of a return spring for the shoe.

In testimony whereof, l have hereunto \signed my name,

Jenn W. Pmneson.

